Anthurium Start PageContentsAnthurium oxystachyumAnthurium paludosum

Anthurium pageanum Croat, sp. nov.

TYPE: Panama. Code: near Continental Divide along lumber road, 5.2 mi. N of El Copé, 1.5 mi. N of lumber camp, ca. 900 m, cloud forest on steep slopes, Croat 44596 (MO 2822540, holotype; K, PMA, US, VEN, isotypes; Live at MO).
Planta epiphytica; cataphyllum modice coriaceum, findens in fibris tenuibus, apice plus minusvc intactum; petiolus 2.5-20 cm longus, plus minusve triangulatus, glanduloso-punctatus; lamina subcoriacea, lanceolata ad oblongo-elliptica, basi acuta, 11-28 cm longa, 3-7 cm lata, utrinque glanduloso-punctata; inflorescentia foliis breviora; pedunculus (9-)16-30(-43) cm longus, teres; spatha membranacea, pallide viridis leviter suffusa rubro-violacea, oblongo-lanceolata, 3-5 cm longa, 8-15 mm lata; spadix flavovirens, 4.7-6.2 cm longus; baccae rubro-auranliacae, obovoideae, 4.5-5 cm longae.

Epiphyte; stems short, 0.8-1.8 cm diam.; roots numerous, to 1 cm diam., green, descending; cataphylls moderately thick, 1.5-4 cm long, acuminate at apex, drying brown, weathering into fine persistent fibers, more or less intact at apex.

LEAVES erect-spreading; petioles 2.5-20 cm long, 2.4 mm diam., more or less triangular, the margins sharp, sometimes 4÷5-winged, conspicuously dark glandular-punctate on surface; ge-niculum usually 3-sided, 0.5-1.5 cm long, the abaxial rib usually undulate; blades subcoria-ceous, lanceolate to oblong-elliptic, short-acuminate (the acumen apiculate, often down-turned), acute at base, 11-28 cm long, 3-7 cm wide, broadest at middle or just below; both surfaces semiglossy, the upper surface inconspic-uously dark (purple-brown) glandular-punctate, the lower surface paler, dark glandular-punctate; midrib acutely raised above and below; primary lateral veins 7-14 per side, departing midrib at 40-65° angle, more or less straight or weakly curved to collective vein, sunken in valleys above, raised below; interprimary veins scarcely visible; collective vein arising from the base, 2-6 mm from margin, sunken above, raised below.

INFLORESCENCE equalling or shorter than leaves; peduncle (9-)16-30(-43) cm long, 2-3 mm diam., terete; spathe thin, pale green, faintly tinged red-violet, oblong-lanceolate, 3-5 cm long, 8-15 mm wide, broadest just above base, short-acuminate at apex, acute to rounded at base, inserted at 55° angle on peduncle; spadix yellow-green (B & K Yellow-green 6/7.5), narrowly tapered to apex, 4.7-6.2(-9) cm long, 3-4 mm diam. at base, 1-2 mm diam. at apex; flowers rhombic to 4-lobed, ca. 4 mm long, ca. 3 mm wide, the sides jaggedly sigmoid, 3-4 flowers visible in the principal spiral, 5-6 visible in the alternate spiral; tepals matte, minutely papillate, the lateral tepals ca. 2 mm wide, the inner margin straight; pistils raised, green; stigmas 0.6 mm long, oblong, darker green than pistil; stamens emerging from near the base, laterals emerging first followed quickly by alternates, stamens retracting after anthesis; anthers white; pollen white.

INFRUCTESCENCE erect-spreading, the spadix to 11 cm long; berries red (B & K Red 5/7.5), obovoid, truncate at apex, 4.5-5 mm in both directions; mesocarp thick, fleshy, juicy, translucent; seeds 4, greenish white, weakly flattened, 1.7-2.6 mm long, 1.2-1.9 mm nwide, 1-1.1 mm thick, slightly depressed at apex with a short, sticky, translucent appendage. Figs. 116,119,and 120.

Anthurium pageanum is endemic to Panama at 300 to 1,200 m in tropical wet and premontane rain forest. Most collections are from the Continental Divide or Atlantic slope in Code and Veraguas Provinces, although it was recently collected in Bocas del Toro Province.

The species is in section Porphyrochitonium and is distinguished by its epiphytic habit, its oblong-elliptic, glandular-punctate (both surfaces), subcoriaceous leaf blade with prominently sunken major veins and acute lower midrib, and by its sharply three-sided petiole often undulate on the geniculum. Also characteristic are the dark green, gradually tapered spadix, the green lanceolate spathe, and the red berries that are indented at the apex. It is confused with Anthurium caloveboranum, which has similar berries and leaf shape, but the latter differs from A. pageanum in having a sub-terete petiole and in being eglandular on the upper blade surface.

The species is named in honor of Dr. Richard Page of the Chcckwood Botanical Garden who contributed live material for study.


Map of Mesoamerican specimens with coordinates

Costa Rica Lim—n: 650 m, 9.23.30N 82.57.50W, 9 July 1989, Abelardo Chacón 145 (MO).
Costa Rica Lim—n: 500 m,, 17 Apr 1985, Gomez et al. 23387 (MO).
Costa Rica Lim—n: 1190 m, 9.22.30N 82.56.25W, 13 July 1989, Gerardo Herrera 3277 (MO).
Costa Rica Lim—n: 1190 m, 9.22.30N 82.56.25W, 13 July 1989, Gerardo Herrera 3279 (MO).
Costa Rica Lim—n: Río Dapari, 1000 m, 09.24.20N 83.05.35W, 10 Mar 1992, Herrera 5286 (MO, CR).
Costa Rica Lim—n: 1400 m, 9.23.50N 83.05.10W, 16 Mar. 1992, Herrera 5365 (CR, INB, MO, NY).
Costa Rica Lim—n: 600 m, 10.3N 83.33W, 10 May 1983, Ronald Liesner, E. Judziewicz & B. Pérez G. 15456 (MO).
Costa Rica Lim—n: Río Segundo, 300-400 m,, 26 Apr 1985, Gómez, L. & G. Herrera 23452 (MO).
Costa Rica Lim—n: Cordillera de Talamanca, 1200-1300 m, 09.45N 83.19W, 18 Aug 1995, Grayum 11086 (INB, MO).
Panama Bocas del Toro: 590 m, 8.46N 82.14W, 10 March 1985, T.B. Croat & M.H. Grayum 60167 (MO).
Panama Bocas del Toro: 700 m, 8.45N 82.15W, 10 March 1985, T.B. Croat & M.H. Grayum 60243 (B, MO).
Panama Bocas del Toro: 1200 m, 8.44N 82.17W, 11 March 198, T.B. Croat & M.H. Grayum 60308 (MO).
Panama Bocas del Toro: 1200 m, 8.47N 82.13W, 26 march 1985, Hampshire & Whitefoord 989 (BM).
Panama CoclŽ: 200-400 m,, 3 Feb. 1983, C. Hamilton & G. Davidse 2656 (MO).
Panama CoclŽ: 900 m,, 19 Jan. 1978, Thomas B. Croat 44596 (MO).
Panama San Blas: 550 m, 9.44N 78.68W, 14 March 1985, Thomas B. Croat 60495 (MO).